Malicious PDF — malware analysis report

Static analysis result for SHA-256 c812cb392ff87411…

MALICIOUS

PDF

184.7 KB Created: 2015-07-25 05:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0372488cd25014b886d77b4418320180 SHA-1: 134d996056cb620fda3a079a8a7ffdce6a1f0c00 SHA-256: c812cb392ff87411f2b142521d5b258649615aa8609c1975ba6aad0d04dd329d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains an embedded link that points to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be luring the user to click the malicious link, likely to download further malware or conduct phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%B1%D0%BE%D1%80%D0%BA%D0%B0+%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B8+%D0%B2+%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D1%83+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197898_vzlom_odnoklassnikov_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196702_muzuyka_iz_geymerov_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197843_kibergrad_skachat_muzuyku_besplatno_mobilnaya_versiya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002400e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2400E 3556 bytes
font_01_sfnt_off00024d91.bin
2935ec77c655b041804193c2fba3a9c018c4dbc672a52e7f5f7b8dbaa85a9788		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D91 14412 bytes
font_02_sfnt_off00027adc.bin
d9775475238cab7937fa4e35d65fbe93a357e8a9e242d68b4cc886ecd1dec298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27ADC 14520 bytes
font_03_sfnt_off0002a5ab.bin
9500731c94107a9dd2b605c674f704871d4560b764f3f6578e4606a0751a2d7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5AB 6712 bytes
font_04_sfnt_off0002b8ee.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8EE 6084 bytes
font_05_sfnt_off0002c883.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C883 3752 bytes

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